That's because the WZ-132 uses the old Type 62 model, and the Type 62 now uses the WZ-131's model. All of them have been re-textured accordingly, of course.
The Type 62 now has nearly the same hull width as the Type 59, as well as hull length. But this was not the case in real life.
Here's what the Type 62 currently looks like:

The WZ-132 and Type 62 look like completely different (but similar) tanks, right? Yeah, except that the WZ-132 and Type 62 were the exact same tank historically. (WZ132 was the factory designation for the Type 62, just like WZ-120 is the factory designation for the Type 59 - and even those two tanks have different models, despite being the same exact tank historically)

According to SinoDefence.com, the Type 62 and the WZ-132 are the same exact tank.
According to other sources, here are the dimensions for the Type 62 and Type 59 in real life:

Here is a comparison between the in-game models of the Type 59 and Type 62, and how the Type 62 should look:

How it should look:
Switch between the pictures to see the differences more clearly (right click, save, then right click all the pics, and click preview, and switch between the pics)
Based off these pics:

Note on the last one (above) how the turret overlaps the hull. This is not apparent in-game.

Suggestion:
Simply revert the Type 62's model to the previous one for historical reasons.

One thing i was always intrigued about the Chinese Domestic armor, was that NORINCO a Chinese defense contractor(weapons firm) built damn near every tank, APC, and general utility vehicle yet there are multiple designations for the same vehicles. Odd and it could be that i am referring to post and pre-production vehicles but i think it may also be a bit of a gray area in terms of what we really know about Chinese Weapon Systems.